Which of the following was an effect of brinkmanship? A) The United States trimmed its army
B) The United States instituted the military draft
C) The United Stats reduced its nuclear weaponry
D) The United States promised military aid to other countries

The answer should be either C or just C.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

an era of negotiation.

is that an answer to your question?